Note 8 - Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Total liabilities which are measured at fair value		$ 931,000
Interest Rate Swap [Member]
Derivative liabilities	$ 23,000
Derivative Instrument asset		75
Earn Out Payment Liability [Member]
Derivative liabilities		44,000
Indemnity Holdback Payment Liability [Member]
Derivative liabilities		887,000
Fair Value, Inputs, Level 1 [Member]
Total liabilities which are measured at fair value
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Derivative liabilities
Derivative Instrument asset
Fair Value, Inputs, Level 1 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 1 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 2 [Member]
Total liabilities which are measured at fair value
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivative liabilities	23,000
Derivative Instrument asset		75
Fair Value, Inputs, Level 2 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 2 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities
Fair Value, Inputs, Level 3 [Member]
Total liabilities which are measured at fair value		931,000
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Derivative liabilities
Derivative Instrument asset
Fair Value, Inputs, Level 3 [Member] | Earn Out Payment Liability [Member]
Derivative liabilities		44,000
Fair Value, Inputs, Level 3 [Member] | Indemnity Holdback Payment Liability [Member]
Derivative liabilities		$ 887,000